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Finding the Fourth Proportional to 619,506.87, 855,036.53 and 404,830.95

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Solution

The fourth proportional to 619,506.87, 855,036.53 and 404,830.95 is: 558,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,506.87 : 855,036.53 = 404,830.95 : x
  2. Step 2: Convert to fraction form
    619,506.87/855,036.53 = 404,830.95/x
  3. Step 3: Cross multiply
    619,506.87x = 855,036.53 × 404,830.95
  4. Step 4: Simplify right side
    619,506.87x = 346,145,250,724.60
  5. Step 5: Solve for x
    x = 346,145,250,724.60/619,506.87
  6. Step 6: Final answer
    x = 558,743.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.